| Reference repulsion when judging the direction of visual motion. | |
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MedLine Citation:
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PMID: 9797918 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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While humans are very reliable (i.e. give highly reproducible answers) when repeatedly judging the direction of a moving random-dot pattern (RDP) we find that their accuracy (i.e. the direction they so reliably report) shows systematic errors. To quantify these errors, we presented a complete set of closely spaced directions and mapped the directional misjudgments by asking subjects to compare the perceived direction of a moving RDP with the direction of a test line. The results show misjudgments of up to 9 degrees, which are best accounted for by a tendency of the subjects to overestimate the angle between the observed motion and an internal reference direction. A control experiment in which subjects had to judge the spatial distance between a point and a line demonstrates that these misjudgments are not confined to motion stimuli but rather seem to reflect a general tendency to overestimate the distance between a stimulus and a reference when they are close to each other. |
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Authors:
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H J Rauber; S Treue |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Perception Volume: 27 ISSN: 0301-0066 ISO Abbreviation: Perception Publication Date: 1998 |
Date Detail:
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Created Date: 1998-11-13 Completed Date: 1998-11-13 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0372307 Medline TA: Perception Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 393-402 Citation Subset: IM |
Affiliation:
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Department of Neurology, University of Tübingen, Germany. rauber@uni-tuebingen.de; treue@uni-tuebingen.de |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Humans Motion Perception* Reproducibility of Results |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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